10 
Psyche 
[March 
Aphaenogaster treatae pluteicornis var. oklahomensis, 
new variety 
Worker. Length 51/2-6 mm. 
Differs from A. treatae pluteicornis in the following re- 
spects: Scape 1% to 1 !/4 the length of the head exclusive 
of the mandibles. Lobe % the length of the antennae and 
more concave next to the posterior flange, which is higher. 
(See Fig. lc & Id.) Epinotal spines about V 2 the base, but 
variable. Epinotum more definitely striated. The first 
dorsal segment of the gaster more faintly reticulate. Pos- 
terior surface of the node of the postpetiole less densely 
punctate above. Fulvous, with head more ferrugineous, 
teeth of mandibles fuscous, and gaster light fulvo-fuscous. 
Female. Length 8 mm. 
Differs from the female of A. pluteicornis in these char- 
acteristics: Antennae shorter, scape 1 1/11 times the length 
of the head. Lobe % the scape. Posterior dorsum of the 
petiole more roughly reticulate, forming indefinite cross- 
striations. Postpetiole more rugose with a tendency to 
cross-striations. Fusco-ferrugineous, darker than most 
females of A. pluteicornis. 
Oklahoma: Poteau, VII-16- , 22. Numerous workers, 1 
dealated female and a few larvae and pupae. Nest under 
a stone in the same environment as A. pluteicornis. 
Aphaenogaster treatae pluteicornis var. alabamensis, new 
variety 
Worker. Length 5-6 mm. 
Differs from A. pluteicornis in the following manner: 
About half the workers have the scape of 1 1/3 times the 
length of the head, the rest vary to 1 %. The anterior sur- 
face of the antennal lobe is usually convex with only a small 
shallow concavity near the low flange; in a few specimens 
it is deeper. The base of the epinotum varies from 2 to 21/2 
times the declivity. 
The head is more coarsely reticulate. Posterior surface 
of the node of the postpetiole finely punctate. Sparse gas- 
tric pubescence entirely absent. 
